Seam for sewed articles.



W. ARBETTER. SEAM FOR SEWED ARTICLES.

APPLIOATION FILED FEB. 10, 1908.

937,274. Patentedbct. 19,1909.

barren snares PATENT enrich WOLF ARBETTER, OF CHELSEA, MASSACHUSETTS,-ASSIGNOR TO ARBIET'EER FELLING MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CQRPQRATION 01" MEJNE.

Specification of Letters Patent.

Patented Get. 19, Hillel.

H Application filed. February 10, 19 03. nerial Ho. traces.

To all whom it may concern:

Be it known that it, ou Ann'nrrnn, a citizen of the United States, residing 1n. Chelsea,

. in the county of Sufiolk and State of Ma-ssuaccompanying drawing, a specification,

chusetts, have invented an Improvement in beams tor Sewed Articles, ot WhlCli the following description, in connection with the like letterson the drawing re jirescnting like parts.

' This invention relates to a seam for sewed articles designed to be made by a sewing machine and adapted for use in securing together by blind stitches or stitches entering and emerging from the same face of the fabric a base layer of fabric and one or more superimposed layers presenting an edge thereon, as for example in the case of what is known as f felling work where the edge,

either raw o-r-folded, is attached to the base layer p It is the object of the present invention to provide such a seam of a strong and durable character and capable of being made by mechanism.

The nature of the seam will appear more fully. from the accompanying description and drawings and will be more particularlypointed out in the claims.

The drawings illustrate the seam as applied tofelling work. Figure 1 is a top plan view of a scam embodying the invention. Fig. 2 is a front elevation of the construction shown in Fig. 1.

Fig. 3 is a' view in cross-section taken on the line la-ac, Fig. 1. y

The seam herein illustrated is designed to be made by a machine of the general type shown in the patent to Arbetter No. 830,699, granted September '11, 1906. In making the seam herein illustrated the presser-foot and guides, suchas shown in the said patent, are so altered as to secure the. presentation of a plurality of layers of fabric to the thrust of the needle, and thus insure the needle entering at each stitch the superimposed layer or layers, and in the case of the diagonal stitch emerging from beneath or at the edge of the superimposed layer or layers.

As the seam of this invention is an article of manufacture the machine by which it. is produced need not be further described.

' In the drawings, A represents the base layer of material and 13 represents the superimposed .ayer or layers. i

In making the seam, two threads are em- I ployed, designated as a needle and a looper thread. In the seam illustrated when made lby a machine such shown in the patent referred to the needle thread is inserted by means of a curved eye-pointed needle, but any suitable instrumentality may be used to insert the loops of needle thread. The looper thread may be inserted by means of the familiar type of rotary hook and in closed bobbin and bobbin case, as shown in said patent, but any suitable means may be used for acconunoda'ting this thread.

Referring to the construction shown in the drawings, the needle in making the first stitch enters the uppersurface of the superimposed layer or layers at a, back from the edge B and emerges from beneath the edge of the superimposed layer, thus presenting the end of the loop of needle thread N at 7), the loop thus'lying in the general direction. I of-the length of the scam and diagonal or oblique thereto. The looper thread L is then passed through the loop of needle thread at b. The needle is then retracted, moved into a position parallel to the edge, and again enters the superimposed layer or layers at 0 back from the edge and emerges from the upper surface of said layer, presenting the loop of needle thread at d, the loop from c to (,Z lying parallel with the edge B. The looper thread L then passes through the loop of needle thread at d. The feed then takes place and the operation is repeated.

In order that the superimposed layers may -be secured to the base layer it is ecessary that at one stitch or the other or at 0th the needle thread shall penetrate the base layer, and in doing so it preferably enters and emerges at the same side of the base layer without passing through to the back or lower. surface thereof. Then the seam is made by a machine of the type shown in the patent before mentioned this may be secured by a suitable positioning and operation of the bender. In the drawings the dia onal stitch is shown as entering the base ayer while the straight stitch is shown as only entering the superimposed layers.

It is obvious that the position. of the looper thread L is determined largely by the ten sion, and the extent to which the loops of needle thread are drawn backward into the fabric, but the general arrangement of the layer and emerging from beneath the edge stitches and of the parts of the seam is not thereby altered.

In a seam of this construction no thread will show on the base layer adjacent. the edgeof the superimposed layer, and all the thread in sight will appear on the upper surface of the superimposed layer.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A seam for sewed articles comprising a base layer of fabric. a SttlJCI'lll'lPOSQtt layer presenting an edge thereon, a thread preseating two rows of loops, the loops of one row entering and emerging from the upper surface of the superimposed layer, the loops of the other row entering the superimposed of said layer, the loops of one of said rows passing into the base layer, a second thread passing through and locking the loops of both rows, whereby the layers are united.

2. A seam for sewed articles comprising a base layer of fabric, a superimposed layer t presenting an edge thereon, a th ?ad presenting two rows of loops, the loops of one row entering and emerging from the upper surface of the superimposed layer parallel with the edge thereof, the loops of the other row entering the superimposed layer, passing into the base layer and emerging from beneath the edge of said superimposed layer, a second thread passing through and locking the loops of both rows, whereby the layers are united.

3. A seam for sewed articles con'iprising a base layer of fabric, a superimposed layer presenting an edge thereon and united there' to by two connected rows of locked stitches. the stitches of one row entering and emerging from the upper surface of the snpernnposed layer parallel to the edge thereof, and the stitches of the other row entering the upper surface of the superimposed layer and emerging from beneath-the edge thereof, the stitches of one of said rows passing into the base layer.

In testimony whereof, I have signed my name to this specification, n the presence of two subscribing witnesses. I

. \VOLF ARlll Y-Vlli llt.

Witnesses h'lAnnL lAu'rnLow, EMILY C. Honors. 

